OnePlus India — Faulty TV

I bought 1+ TV in March'22 and problem started in August and for some reason I could not complain before and I complained in October but response was not proper from there (full details will give you in mail) and 1+ did nothing and TV warranty time is over but I was bought TV from Reliance and at the same time I took 2 years extra warranty, then I complained to Reliance and even no progress from there also, now I want to take action on both companies.